Fix: TV screen power on and off effect for multiple videos

tv-player/src/scene/tv-set.js

@@ -137,7 +137,7 @@ export function createTvSet(x, z, rotY) {
     
     // Position the curved screen
     state.tvScreen.position.set(0.0, 1.5, -2.1); 
-    turnTvScreenOff();
+    setTvScreenOffMaterial();
     tvGroup.add(state.tvScreen);
 
     tvGroup.position.set(x, 0, z);
@@ -162,7 +162,7 @@ export function createTvSet(x, z, rotY) {
     state.scene.add(tvGroup);
 }
 
-export function turnTvScreenOff() {
+function setTvScreenOffMaterial() {
     if (state.tvScreen.material) {
         state.tvScreen.material.dispose();
     }
@@ -174,11 +174,20 @@ export function turnTvScreenOff() {
     state.tvScreen.material.needsUpdate = true;
 }
 
+export function turnTvScreenOff() {
+    if (state.tvScreenPowered) {
+        state.tvScreenPowered = false;
+        setScreenEffect(2, () => {
+            setTvScreenOffMaterial();
+            state.screenLight.intensity = 0.0;
+        }); // Trigger power down
+    }
+}
+
 export function turnTvScreenOn() {
     if (state.tvScreen.material) {
         state.tvScreen.material.dispose();
     }
-
     state.tvScreen.material = new THREE.ShaderMaterial({
         uniforms: {
             videoTexture: { value: state.videoTexture },
@@ -191,7 +200,11 @@ export function turnTvScreenOn() {
     });
 
     state.tvScreen.material.needsUpdate = true;
-    setScreenEffect(1); // Trigger warm-up
+
+    if (!state.tvScreenPowered) {
+        state.tvScreenPowered = true;
+        setScreenEffect(1); // Trigger warm-up
+    }
 }
 
 /**